Crimpdeq

Meet Crimpdeq, a portable digital force sensor for climbers, coaches, and therapists who want to measure and train finger strength, pulling power, and endurance. It is inspired by the Tindeq Progressor and is compatible with both the Tindeq and Frez apps.

Specs

• Rechargeable battery with USB-C charging
• Communicates via Bluetooth Low Energy (BLE)
• Open-source firmware written in Rust
• Open-source PCB design
• Open-source 3D-printable case design
• Automatic sleep when inactive
• Compatible with the Tindeq Progressor app (Android | iOS)
• Compatible with the Frez app (formerly ClimbHarder) (Android | iOS)
• Sampling rate: 80 Hz
• Full-scale design load: 1500 N (~150 kg)
• Precision:
  • 0.05 kg between 0 and 99 kg
  • 0.1 kg between 100 and 150 kg
• Operating temperature: 0 to 40 C
• Dimensions: 80 x 90 x 35 mm
• Uses the Tindeq Progressor API

⚠️ Warning: Some values depend on the load cell used in this project. If you use a different load cell, those values may change.

Book Contents

This book is a practical guide to understanding Crimpdeq and building your own. It covers assembly, calibration, firmware internals, and the PCB and 3D-printable case design.

⚠️ Note: If you want to reproduce this project, feel free to reach out by email ([email protected]), X (formerly Twitter), or Bluesky.